Skip to content
月离文档
Search
Ctrl
K
Cancel
Select theme
Dark
Light
Auto
Select language
English
中文（中国）
Ae表达式
Ae脚本开发
JavaScript工具
AE插件开发
Pr脚本开发
Pr插件开发
Ai脚本开发
Houdini Vex
Arrays
append
argsort
array
foreach
insert
isvalidindex
len
pop
push
removeindex
removevalue
reorder
resize
reverse
slice
sort
upush
Attributes And Intrinsics
addattrib
adddetailattrib
addpointattrib
addprimattrib
addvertexattrib
addvisualizer
attrib
attribclass
attribdataid
attribsize
attribtype
attribtypeinfo
curvearclen
detail
detailattrib
detailattribsize
detailattribtype
detailattribtypeinfo
detailintrinsic
findattribval
findattribvalcount
getattrib
getattribute
hasattrib
hasdetailattrib
haspointattrib
hasprimattrib
hasvertexattrib
idtopoint
idtoprim
nametopoint
nametoprim
nuniqueval
point
pointattrib
pointattribsize
pointattribtype
pointattribtypeinfo
pointlocaltransforms
pointtransform
pointtransformrigid
pointtransforms
pointtransformsrigid
prim_attribute
prim
primarclen
primattrib
primattribsize
primattribtype
primattribtypeinfo
primduv
priminteriorweights
primintrinsic
primuv
primuvconvert
removedetailattrib
removepointattrib
removepointgroup
removeprimattrib
removeprimgroup
removevertexattrib
removevertexgroup
setattrib
setattribtypeinfo
setdetailattrib
setdetailintrinsic
setpointattrib
setpointlocaltransforms
setpointtransform
setpointtransforms
setprimattrib
setprimintrinsic
setvertexattrib
uniqueval
uniquevals
uvsample
vertex
vertexattrib
vertexattribsize
vertexattribtype
vertexattribtypeinfo
Bsdfs
albedo
ashikhmin
blinn
chiang_fur
chiang
cone
cvex_bsdf
diffuse
eval_bsdf
getbounces
ggx
hair
henyeygreenstein
isotropic
mask_bsdf
normal_bsdf
phong
phonglobe
sample_bsdf
solid_angle
specular
split_bsdf
sssapprox
Channel Primitives
chprim_clear
chprim_destroykey
chprim_end
chprim_eval
chprim_insertkey
chprim_keycount
chprim_keytimes
chprim_keyvalues
chprim_length
chprim_setkeyaccel
chprim_setkeyslope
chprim_setkeyvalue
chprim_start
Chop
chadd
chattr
chattrnames
chend
chendf
chendt
chindex
chinput
chinputlimits
chnames
chnumchan
chop
choplocal
choplocalt
chopt
chrate
chreadbuf
chremove
chremoveattr
chrename
chresizebuf
chsetattr
chsetlength
chsetrate
chsetstart
chstart
chstartf
chstartt
chwritebuf
isframes
issamples
isseconds
ninputs
Color
blackbody
ctransform
luminance
Conversion
atof
atoi
cracktransform
degrees
eulertoquaternion
hsvtorgb
qconvert
quaterniontoeuler
radians
rgbtohsv
rgbtoxyz
serialize
unserialize
xyztorgb
Crowds
agentaddclip
agentchannelcount
agentchannelnames
agentchannelvalue
agentchannelvalues
agentclipcatalog
agentclipchannel
agentclipchannelnames
agentcliplayerblend
agentcliplength
agentclipnames
agentclipsample
agentclipsamplelocal
agentclipsamplerate
agentclipsampleworld
agentclipstarttime
agentcliptimes
agentcliptransformgroups
agentclipweights
agentcollisionlayer
agentcollisionlayers
agentcurrentlayer
agentcurrentlayers
agentfindclip
agentfindlayer
agentfindtransformgroup
agentlayerbindings
agentlayers
agentlayershapes
agentlocaltransform
agentlocaltransforms
agentmetadata
agentrestlocaltransform
agentrestworldtransform
agentrigchildren
agentrigfind
agentrigfindchannel
agentrigparent
agentsolvefbik
agenttransformcount
agenttransformgroupmember
agenttransformgroupmemberchannel
agenttransformgroups
agenttransformgroupweight
agenttransformnames
agenttransformtolocal
agenttransformtoworld
agentworldtransform
agentworldtransforms
setagentchannelvalue
setagentchannelvalues
setagentclipnames
setagentclips
setagentcliptimes
setagentclipweights
setagentcollisionlayer
setagentcollisionlayers
setagentcurrentlayer
setagentcurrentlayers
setagentlocaltransform
setagentlocaltransforms
setagentworldtransform
setagentworldtransforms
Dict
json_dumps
json_loads
keys
typeid
Displace
dimport
File I
file_stat
Filter
filter_remap
Fuzzy Logic
fuzzify
fuzzy_and
fuzzy_defuzz_centroid
fuzzy_nand
fuzzy_nor
fuzzy_not
fuzzy_nxor
fuzzy_or
fuzzy_xor
Geometry
addpoint
addprim
addvertex
clip
geoself
geounwrap
inedgegroup
intersect_all
intersect
minpos
nearpoint
nearpoints
nedgesgroup
neighbour
neighbourcount
neighbours
npoints
nprimitives
nvertices
nverticesgroup
pointprims
pointvertex
pointvertices
polyneighbours
primfind
primpoint
primpoints
primvertex
primvertexcount
primvertices
removeattrib
removepoint
removeprim
removevertex
setedgegroup
setprimvertex
setvertexpoint
uvintersect
vertexcurveparam
vertexindex
vertexnext
vertexpoint
vertexprev
vertexprim
vertexprimindex
Groups
expandedgegroup
expandpointgroup
expandprimgroup
expandvertexgroup
inpointgroup
inprimgroup
invertexgroup
npointsgroup
nprimitivesgroup
setpointgroup
setprimgroup
setvertexgroup
Half Edges
hedge_dstpoint
hedge_dstvertex
hedge_equivcount
hedge_isequiv
hedge_isprimary
hedge_isvalid
hedge_next
hedge_nextequiv
hedge_postdstpoint
hedge_postdstvertex
hedge_presrcpoint
hedge_presrcvertex
hedge_prev
hedge_prim
hedge_primary
hedge_srcpoint
hedge_srcvertex
pointedge
pointhedge
pointhedgenext
primhedge
vertexhedge
Hex
hex_adjacent
hex_faceindex
Image Processing
accessframe
alphaname
binput
bumpname
chname
cinput
colorname
depthname
dsmpixel
finput
hasmetadata
hasplane
iaspect
ichname
iend
iendtime
ihasplane
inumplanes
iplaneindex
iplanename
iplanesize
irate
istart
istarttime
ixres
iyres
lumname
maskname
metadata
ninput
normalname
planeindex
planename
planesize
pointname
velocityname
Interpolation
ckspline
clamp
cspline
efit
fit
fit01
fit10
fit11
invlerp
lerp
lkspline
lspline
slerp
slerpv
smooth
Language
arrays
dictionaries
loops-and-flow-control
shader-calls
strings
vex-compiler-vcc
vex-compiler-pragmas
vex-language-reference
Light
ambient
atten
fastshadow
filtershadow
Math
abs
acos
asin
atan
atan2
avg
cbrt
ceil
combinelocaltransform
cos
cosh
cross
determinant
diag
diagonalizesymmetric
distance_pointline
distance_pointray
distance_pointsegment
dot
du
dv
dw
eigenvalues
erf_inv
erf
erfc
exp
extractlocaltransform
floor
frac
ident
invert
isfinite
isinf
isnan
kspline
length
length2
log
log10
makebasis
max
min
norm_1
norm_fro
norm_inf
norm_max
norm_spectral
normalize
outerproduct
pinvert
planesphereintersect
pow
predicate_incircle
predicate_insphere
predicate_orient2d
predicate_orient3d
premul
product
ptlined
qdistance
qinvert
qmultiply
qrotate
quaternion
resample_linear
rint
shl
shr
shrz
sign
sin
sinh
slideframe
solvecubic
solvepoly
solvequadratic
solvetrianglesss
spline_cdf
spline
sqrt
sum
svddecomp
tan
tanh
tr
transpose
trunc
Measure
distance
distance2
getbbox_center
getbbox_max
getbbox_min
getbbox_size
getbbox
getbounds
getpointbbox_center
getpointbbox_max
getpointbbox_min
getpointbbox_size
getpointbbox
planepointdistance
relbbox
relpointbbox
surfacedist
uvdist
windingnumber
windingnumber2d
xyzdist
Metaball
metaimport
metamarch
metanext
metastart
metaweight
Nodes
addvariablename
ch
ch2
ch3
ch4
chdict
chexpr
chexprf
chexprt
chf
chi
chid
chp
chramp
chrampderiv
chs
chsop
chsraw
chu
chv
cregioncapturetransform
cregiondeformtransform
cregionoverridetransform
isconnected
opfullpath
opid
opparentbonetransform
opparenttransform
opparmtransform
oppreconstrainttransform
oppreparmtransform
opprerawparmtransform
oppretransform
oprawparmtransform
optransform
Noise And Randomness
anoise
curlgxnoise
curlgxnoise2d
curlnoise
curlnoise2d
curlxnoise
curlxnoise2d
cwnoise
flownoise
flowpnoise
gxnoise
gxnoised
hscript_noise
hscript_rand
hscript_snoise
hscript_sturb
hscript_turb
mwnoise
mx_cellnoise
mx_perlin
mx_voronoi
mx_worley
noise
noised
nrandom
onoise
pnoise
pxnoised
rand
random_brj
random_fhash
random_ihash
random_poisson
random_shash
random_sobol
random
snoise
vnoise
wnoise
xnoise
xnoised
Normals
computenormal
prim_normal
Open Color Io
ocio_activedisplays
ocio_activeviews
ocio_import
ocio_parsecolorspace
ocio_roles
ocio_spaces
ocio_transform
ocio_transformview
Particles
filamentsample
Point Clouds And 3d Images
mattrib
mdensity
mspace
pcclose
pccone_radius
pccone
pcconvex
pcexport
pcfarthest
pcfilter
pcfind_radius
pcfind
pcgenerate
pcimport
pcimportbyidx3
pcimportbyidx4
pcimportbyidxf
pcimportbyidxi
pcimportbyidxp
pcimportbyidxs
pcimportbyidxv
pciterate
pcline_radius
pcline
pcnumfound
pcopen
pcopenlod
pcsampleleaf
pcsegment_radius
pcsegment
pcsize
pcunshaded
pcwrite
pgfind
photonmap
texture3d
texture3dbox
Reference
vex-contexts
vex-functions
Sampling
create_cdf
create_pdf
limit_sample_space
newsampler
nextsample
sample_cauchy
sample_cdf
sample_circle_arc
sample_circle_edge_uniform
sample_circle_ring_uniform
sample_circle_slice
sample_circle_uniform
sample_direction_cone
sample_direction_uniform
sample_discrete
sample_exponential
sample_geometry
sample_hemisphere
sample_hypersphere_cone
sample_hypersphere_uniform
sample_light
sample_lognormal_by_median
sample_lognormal
sample_normal
sample_orientation_cone
sample_orientation_uniform
sample_photon
sample_sphere_cone
sample_sphere_shell_uniform
sample_sphere_uniform
sampledisk
variance
Sensor Input
sensor_panorama_create
sensor_panorama_getcolor
sensor_panorama_getcone
sensor_panorama_getdepth
sensor_save
Shading And Rendering
area
blinnbrdf
bouncelabel
bouncemask
diffusebrdf
filterstep
fresnel
frontface
gather
getblurp
getcomponents
getderiv
getfogname
getglobalraylevel
getgroupid
getlight
getlightid
getlightname
getlights
getlightscope
getlocalcurvature
getmaterial
getmaterialid
getobjectid
getobjectname
getphotonlight
getprimid
getptextureid
getraylevel
getrayweight
getsamplestore
getscope
getsmoothp
getuvtangents
gradient
haslight
illuminance
integratehoseksky
interpolate
intersect_lights
irradiance
isfogray
islpeactive
israytracing
isshadingrhs
isshadowray
isuvrendering
lightbounces
lightid
lightstate
limport
matchvex_blinn
matchvex_specular
nbouncetypes
objectstate
occlusion
pathtrace
phongbrdf
rayhittest
rayimport
reflect
reflectlight
refract
refractlight
renderstate
resolvemissedray
scatter
setcurrentlight
setsamplestore
shadow_light
shadow
shimport
simport
specularbrdf
storelightexport
switch
trace
translucent
uvunwrap
wireblinn
wirediffuse
writepixel
Strings
abspath
chr
concat
decode
decodeattrib
decodeparm
decodeutf8
encode
encodeattrib
encodeparm
encodeutf8
endswith
find
isalpha
isdigit
itoa
join
lstrip
makevalidvarname
match
opdigits
ord
pluralize
re_find
re_findall
re_match
re_replace
re_split
relativepath
relpath
replace_match
replace
rstrip
split
splitpath
sprintf
startswith
strip
strlen
titlecase
tolower
toupper
Subdivision Surfaces
osd_facecount
osd_firstpatch
osd_limitsurface
osd_limitsurfacevertex
osd_lookupface
osd_lookuppatch
osd_patchcount
osd_patches
Tetrahedrons
tet_adjacent
tet_faceindex
Texturing
colormap
depthmap
environment
expand_udim
has_udim
importance_remap
ocean_sample
ptexture
rawcolormap
shadowmap
teximport
texprintf
texture
Transforms And Space
dihedral
fromndc
getpackedtransform
getspace
instance
lookat
maketransform
ndcdepth
ntransform
orthographic
ow_nspace
ow_space
ow_vspace
packedtransform
perspective
polardecomp
prerotate
prescale
pretranslate
ptransform
rotate_x_to
rotate
scale
setpackedtransform
smoothrotation
solveconstraint
solvecurve
solvefbik
solveik
solvephysfbik
tondc
translate
tw_nspace
tw_space
tw_vspace
vtransform
wo_nspace
wo_space
wo_vspace
wt_nspace
wt_space
wt_vspace
Usd
usd_addattrib
usd_addcollectionexclude
usd_addcollectioninclude
usd_addinversetotransformorder
usd_addorient
usd_addprim
usd_addprimvar
usd_addrelationshiptarget
usd_addrotate
usd_addscale
usd_addschemaattrib
usd_addtotransformorder
usd_addtransform
usd_addtranslate
usd_applyapi
usd_attrib
usd_attribelement
usd_attriblen
usd_attribnames
usd_attribsize
usd_attribtimesamples
usd_attribtypename
usd_blockattrib
usd_blockprimvar
usd_blockprimvarindices
usd_blockrelationship
usd_boundmaterialpath
usd_childnames
usd_clearmetadata
usd_cleartransformorder
usd_collectioncomputedpaths
usd_collectioncontains
usd_collectionexcludes
usd_collectionexpansionrule
usd_collectionincludes
usd_drawmode
usd_findtransformname
usd_flattenediprimvar
usd_flattenediprimvarelement
usd_flattenedprimvar
usd_flattenedprimvarelement
usd_getbbox_center
usd_getbbox_max
usd_getbbox_min
usd_getbbox_size
usd_getbbox
usd_getbounds
usd_getpointinstancebounds
usd_hasapi
usd_haspayload
usd_iprimvar
usd_iprimvarelement
usd_iprimvarelementsize
usd_iprimvarindices
usd_iprimvarinterpolation
usd_iprimvarlen
usd_iprimvarnames
usd_iprimvarsize
usd_iprimvartimesamples
usd_iprimvartypename
usd_isabstract
usd_isactive
usd_isarray
usd_isarrayiprimvar
usd_isarraymetadata
usd_isarrayprimvar
usd_isattrib
usd_iscollection
usd_iscollectionpath
usd_isindexediprimvar
usd_isindexedprimvar
usd_isinstance
usd_isiprimvar
usd_iskind
usd_ismetadata
usd_ismodel
usd_isprim
usd_isprimvar
usd_isrelationship
usd_isstage
usd_istransformreset
usd_istype
usd_isvisible
usd_kind
usd_localtransform
usd_makeattribpath
usd_makecollectionpath
usd_makepropertypath
usd_makerelationshippath
usd_makevalidprimname
usd_makevalidprimpath
usd_metadata
usd_metadataelement
usd_metadatalen
usd_metadatanames
usd_name
usd_parentpath
usd_pointinstance_getbbox_center
usd_pointinstance_getbbox_max
usd_pointinstance_getbbox_min
usd_pointinstance_getbbox_size
usd_pointinstance_getbbox
usd_pointinstance_relbbox
usd_pointinstancetransform
usd_primvar
usd_primvarattribname
usd_primvarelement
usd_primvarelementsize
usd_primvarindices
usd_primvarinterpolation
usd_primvarlen
usd_primvarnames
usd_primvarsize
usd_primvartimesamples
usd_primvartypename
usd_purpose
usd_relationshipforwardedtargets
usd_relationshipnames
usd_relationshiptargets
usd_relbbox
usd_removerelationshiptarget
usd_setactive
usd_setattrib
usd_setattribelement
usd_setcollectionexcludes
usd_setcollectionexpansionrule
usd_setcollectionincludes
usd_setdrawmode
usd_setkind
usd_setmetadata
usd_setmetadataelement
usd_setprimvar
usd_setprimvarelement
usd_setprimvarelementsize
usd_setprimvarindices
usd_setprimvarinterpolation
usd_setpurpose
usd_setrelationshiptargets
usd_settransformorder
usd_settransformreset
usd_setvariantselection
usd_setvisibility
usd_setvisible
usd_specifier
usd_transformname
usd_transformorder
usd_transformsuffix
usd_transformtype
usd_typename
usd_uniquetransformname
usd_variants
usd_variantselection
usd_variantsets
usd_worldtransform
Utility
assert_enabled
assign
error
forpoints
getcomp
isbound
isvarying
opend
opstart
pack_inttosafefloat
print_once
printf
ramp_lookup
ramp_pack
ramp_unpack
select
set
setcomp
sleep
swizzle
unpack_intfromsafefloat
warning
Volume
volume
volumecubicsample
volumecubicsamplev
volumegradient
volumeindex
volumeindexactive
volumeindexi
volumeindexorigin
volumeindexp
volumeindextopos
volumeindexu
volumeindexv
volumepostoindex
volumeres
volumesample
volumesamplei
volumesamplep
volumesampleu
volumesamplev
volumesmoothsample
volumesmoothsamplev
volumetypeid
volumevoxeldiameter
Weightarray
weightarrayblend
weightarrayfromname
weightarraynormalize
weightarraythreshold
GitHub
Select theme
Dark
Light
Auto
Select language
English
中文（中国）
houdini-vex
erfc
float erfc(float v)
Equal to
1 - erf(v)
.